chaos | 9d898d6795f3d5cab2fbdb217d24d7504d7da4e67c7ed41e9c1468e49f96de00

Analysis

max time kernel
118s
max time network
120s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
26-09-2024 15:30

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General

Target

2024-09-26_a1a903c5a6cb70282502e31c0a5baab7_destroyer_wannacry.exe
Size

21KB
MD5

a1a903c5a6cb70282502e31c0a5baab7
SHA1

0a452c52690ed627a3f072d372454b3e8f6ce73a
SHA256

9d898d6795f3d5cab2fbdb217d24d7504d7da4e67c7ed41e9c1468e49f96de00
SHA512

f8b48b0a04f8bbf6f9a63999ad1ded375ace71bb432c18f421c5832ccf65984bab876af4220212a40e45596c9f3fdcc0c5ef8a0facf4a401a54617c7cda53559
SSDEEP

384:u3MLWHn3kIM6s33BK9vp1V+tQoN7J/r91CrbCM7ex:Sn3kIU3xOvpOQq/r9Sbzex

Score

10^/10

chaos ransomware spyware stealer

Malware Config

Signatures

Chaos
Ransomware family first seen in June 2021.
ransomware chaos

Chaos Ransomware 3 IoCs

resource	yara_rule
behavioral1/memory/2732-1-0x0000000000920000-0x000000000092C000-memory.dmp	family_chaos
behavioral1/files/0x000a000000012283-6.dat	family_chaos
behavioral1/memory/2708-8-0x0000000000270000-0x000000000027C000-memory.dmp	family_chaos

Drops startup file 3 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.url	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\desktop.ini	svchost.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\read_it.txt	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2708	svchost.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Drops desktop.ini file(s) 34 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\SendTo\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Pictures\Sample Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Music\Sample Music\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Documents\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Downloads\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Music\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Videos\desktop.ini	svchost.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-3434294380-2554721341-1919518612-1000\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Searches\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Videos\Sample Videos\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Desktop\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Favorites\Links for United States\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Documents\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Links\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Videos\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Libraries\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Desktop\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Favorites\Links\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Music\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Contacts\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Saved Games\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Favorites\desktop.ini	svchost.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
2312	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2708	svchost.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
2732	2024-09-26_a1a903c5a6cb70282502e31c0a5baab7_destroyer_wannacry.exe
2732	2024-09-26_a1a903c5a6cb70282502e31c0a5baab7_destroyer_wannacry.exe
2732	2024-09-26_a1a903c5a6cb70282502e31c0a5baab7_destroyer_wannacry.exe
2708	svchost.exe
2708	svchost.exe
2708	svchost.exe
2708	svchost.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2732	2024-09-26_a1a903c5a6cb70282502e31c0a5baab7_destroyer_wannacry.exe
Token: SeDebugPrivilege	2708	svchost.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2732 wrote to memory of 2708	2732	2024-09-26_a1a903c5a6cb70282502e31c0a5baab7_destroyer_wannacry.exe	30
PID 2732 wrote to memory of 2708	2732	2024-09-26_a1a903c5a6cb70282502e31c0a5baab7_destroyer_wannacry.exe	30
PID 2732 wrote to memory of 2708	2732	2024-09-26_a1a903c5a6cb70282502e31c0a5baab7_destroyer_wannacry.exe	30
PID 2708 wrote to memory of 2312	2708	svchost.exe	32
PID 2708 wrote to memory of 2312	2708	svchost.exe	32
PID 2708 wrote to memory of 2312	2708	svchost.exe	32

C:\Users\Admin\AppData\Local\Temp\2024-09-26_a1a903c5a6cb70282502e31c0a5baab7_destroyer_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-26_a1a903c5a6cb70282502e31c0a5baab7_destroyer_wannacry.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2732
- C:\Users\Admin\AppData\Roaming\svchost.exe
  "C:\Users\Admin\AppData\Roaming\svchost.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Drops desktop.ini file(s)
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2708
- - C:\Windows\system32\NOTEPAD.EXE
    "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\read_it.txt
    3⤵
    - Opens file in notepad (likely ransom note)
    PID:2312

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\svchost.exe

Filesize
21KB

MD5
a1a903c5a6cb70282502e31c0a5baab7

SHA1
0a452c52690ed627a3f072d372454b3e8f6ce73a

SHA256
9d898d6795f3d5cab2fbdb217d24d7504d7da4e67c7ed41e9c1468e49f96de00

SHA512
f8b48b0a04f8bbf6f9a63999ad1ded375ace71bb432c18f421c5832ccf65984bab876af4220212a40e45596c9f3fdcc0c5ef8a0facf4a401a54617c7cda53559

Download Submit
C:\Users\Admin\Desktop\read_it.txt

Filesize
498B

MD5
f3467a18bc9bff5d1fa6fde886434b25

SHA1
a99e70caecf250cbb3b99407225305dd13a5c397

SHA256
214e91de820244192eba3647e738b19807fd67cdb7c63cabbcdc17c8de03e783

SHA512
cdd9b1f4037e8e2f111b0331666dfdcf33a7a86c075b548148608e2c6410eda510afe4817b3375b0d6acb0e923c9e54b359226d538f8b74db921eac70b8fe840

Download Submit
memory/2708-8-0x0000000000270000-0x000000000027C000-memory.dmp

Filesize
48KB

Download
memory/2708-18-0x000007FEF5D80000-0x000007FEF676C000-memory.dmp

Filesize
9.9MB

Download
memory/2708-83-0x000007FEF5D80000-0x000007FEF676C000-memory.dmp

Filesize
9.9MB

Download
memory/2708-84-0x000007FEF5D80000-0x000007FEF676C000-memory.dmp

Filesize
9.9MB

Download
memory/2732-0-0x000007FEF5D83000-0x000007FEF5D84000-memory.dmp

Filesize
4KB

Download
memory/2732-1-0x0000000000920000-0x000000000092C000-memory.dmp

Filesize
48KB

Download
memory/2732-2-0x000007FEF5D83000-0x000007FEF5D84000-memory.dmp

Filesize
4KB

Download